/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.flowable.engine.test.bpmn.deployment;

import static org.assertj.core.api.Assertions.assertThat;

import org.flowable.engine.impl.test.PluggableFlowableTestCase;
import org.flowable.job.api.Job;
import org.junit.jupiter.api.Test;

/**
 * A test specifically written to test how events (start/boundary) are handled when deploying a new version of a process definition.
 * 
 * @author Joram Barrez
 */
public class TimerEventsAndNewVersionDeploymentsTest extends PluggableFlowableTestCase {

    private static final String TEST_TIMER_PROCESS = "org/flowable/engine/test/bpmn/deployment/TimerEventsAndNewVersionDeploymentsTest.timerTest.bpmn20.xml";

    private static final String TEST_PROCESS_NO_TIMER = "org/flowable/engine/test/bpmn/deployment/TimerEventsAndNewVersionDeploymentsTest.processWithoutEvents.bpmn20.xml";

    @Test
    public void testTimerCreationOnNewDeployments() {
        String deploymentId1 = deployTimerProcess();
        assertTimerJobs(1);

        String deploymentId2 = deployTimerProcess();
        assertTimerJobs(1);

        String deploymentId3 = deployProcessWithoutTimers(); // Process has same key
        assertTimerJobs(0);

        String deploymentId4 = deployTimerProcess();
        assertTimerJobs(1);

        cleanup(deploymentId1, deploymentId2, deploymentId3, deploymentId4);
    }

    @Test
    public void testTimerRestoreOnDeploymentDelete1() {
        String deploymentId1 = deployTimerProcess();
        String deploymentId2 = deployProcessWithoutTimers(); // Process has same key
        String deploymentId3 = deployTimerProcess();
        String deploymentId4 = deployProcessWithoutTimers();

        assertTimerJobs(0);

        repositoryService.deleteDeployment(deploymentId4, true);
        assertTimerJobs(1);
        Job job = managementService.createTimerJobQuery().singleResult();
        assertThat(job.getProcessDefinitionId()).isEqualTo(repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId3).singleResult().getId());

        cleanup(deploymentId1, deploymentId2, deploymentId3);
    }

    @Test
    public void testTimerRestoreOnDeploymentDelete2() {
        String deploymentId1 = deployTimerProcess();
        String deploymentId2 = deployProcessWithoutTimers(); // Process has same key
        String deploymentId3 = deployTimerProcess();
        String deploymentId4 = deployProcessWithoutTimers();

        assertTimerJobs(0);

        repositoryService.deleteDeployment(deploymentId3, true);
        assertTimerJobs(0);
        repositoryService.deleteDeployment(deploymentId2, true);
        assertTimerJobs(0);
        repositoryService.deleteDeployment(deploymentId4, true);
        assertTimerJobs(1);
        Job job = managementService.createTimerJobQuery().singleResult();
        assertThat(job.getProcessDefinitionId()).isEqualTo(repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId1).singleResult().getId());

        cleanup(deploymentId1);
    }

    /*
     * HELPERS
     */

    private String deployTimerProcess() {
        return deploy(TEST_TIMER_PROCESS);
    }

    private String deployProcessWithoutTimers() {
        return deploy(TEST_PROCESS_NO_TIMER);
    }

    private String deploy(String path) {
        String deploymentId = repositoryService
                .createDeployment()
                .addClasspathResource(path)
                .deploy()
                .getId();
        return deploymentId;
    }

    private void assertTimerJobs(long count) {
        assertThat(managementService.createTimerJobQuery().timers().count()).isEqualTo(count);
    }

    private void cleanup(String... deploymentIds) {
        for (String deploymentId : deploymentIds) {
            repositoryService.deleteDeployment(deploymentId, true);
        }
    }

}
